Hyperthyroidism is a condition in which there is overproduction of thyroid hormone by the thyroid gland, causing the levels of thyroid hormone in the blood to be too high. People who have it are often said to have an “overactive thyroid”. The thyroid gland is a small, butterfly-shaped organ located in the neck below and […]
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The vast majority of cases of hypothyroidism (roughly 95% or more) are caused by a problem within the thyroid gland. A much smaller number of cases (roughly 5% or less) are caused by a problem in the brain or pituitary gland, a small gland located beneath the brain. The causes of hypothyroidism include: A condition
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These are two major causes of hyperthyroidism. About 95 percent of persons diagnosed with hyperthyroidism are found to have a condition called Graves’ disease. Most of the remaining persons have a condition called nodular thyroid disease. A less frequent cause is inflammation of the thyroid gland, called thyroiditis Uncommon causes include hormone producing tumors of the pituitary gland or ovary and
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The presence and severity of symptoms are different for different persons. Although many symptoms of hypothyroidism cause distress, most are not dangerous themselves. Indeed, proper diagnosis may be delayed or missed in older adults because the symptoms are considered “just part of getting old.” An individual may not seek help until tiredness, impaired memory, or
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